Quran 47:34 from Surah Muhammad on Divine Marvels.
إِنَّ ٱلَّذِينَ كَفَرُواْ وَصَدُّواْ عَن سَبِيلِ ٱللَّهِ ثُمَّ مَاتُواْ وَهُمۡ كُفَّارٞ فَلَن يَغۡفِرَ ٱللَّهُ لَهُمۡ
English translation: Indeed those who disbelieve and turn away from (the) way (of) Allah then died while they (were) disbelievers never will Allah forgive will Allah forgive them
Transliteration: inna alladhina kafaru wasaddu an sabili al-lahi thumma matu wahum kuffarun falan yaghfira al-lahu lahum